Re: kendo, Iaido and aikido
I do kendo and aikido too.
You'll probably feel awkward as hell at first but there will be lots of nice *clicks* in the brain when you see the same principals applied across the two.
BTW you don't wear hakama to begin with at aikido, get a judo or aikidogi as suggested as the kendogi will not last!
I wish you luck
Peace and love